Browse Items (70 total)
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Earth Inductor
Physical Description
A rectangular, lengthwise symmetric, wood frame (163cm X 43.5cm) that houses two rings (inner diam. 23cm, outer diam. 30.5cm), one on each side of the line of symmetry, which acts as spindles for wire. The frame is held together…
Tags: Electromagnetism, geophysics, induction
Dietzgen Master-Pro Drafting Instrument Set
Physical Description: The drafting set is stored in a simple grey case with a red felt interior. The case only has three words on the outside cover: “Made in Germany”. The only markings on the inside of the case are the letters “DS” written in marker…
Tags: 1930s, Architecture, Cartography, Compass, Dietzgen, Divider, Drafting, Technical Drawing
4242 compensating polar planimeter
Physical Description: The Keuffel and Esser polar planimeter is composed of two individual pieces. One being the main body, and the other a tracer arm. Both sections are comprised of tarnished silver square rods with black markings indicating…
Weston D.C. Voltmeter, Model 45
Front face with lid opened:
Knobs: Toward the top of the box on the front face, there are 3 screw knobs (two on the left, one on the right). Each dial has a knurled surface, and when unscrewed, reveals a metal electrical lead. Above the knobs…
Knobs: Toward the top of the box on the front face, there are 3 screw knobs (two on the left, one on the right). Each dial has a knurled surface, and when unscrewed, reveals a metal electrical lead. Above the knobs…
Tags: Electricity, Measurement
Geissler Tube
Physical Description
This Geissler tube is approximately 155 centimeters long and weighs 984.4 grams or about 2.17 pounds. The outer tube is made up of symmetric sections of long tubes with a large bulb at the center. These sections themselves…
American Thompson Steam Gauge
Physical Description:The Thompson Improved Steam Indicator comes in a dark stained wooden box 285mm wide, 207mm deep, and 240mm tall. It opens about halfway up its height to reveal a number of objects. The box, as well as various components, are…
Tags: 19C, 20C, mechanical
Raman Spectrometer
Functional: The Raman Spectrometer was and is used to measure stretching of bonds by measuring the inelastic scattering of light, which are output in lines of light also known as excitation lines, for the sample being collected. To test a sample the…
Radiotron
Physical Description: The Radiotron is a tall glass tube that stands 41cm high. The total width of the Radiotron is 25cm. The main glass sphere has a diameter of 18.34 cm. Attached to one side of this sphere is a tubular piece that has an outside…
Shimadzu UV160U Spectrophotometer
Physical Description
The spectrophotometer consists of four sections; a screen, a touchpad, a glass sample bay, a light bay, and a power control section. The spectrophotometer is similarly built to an early computer with the processing system as a…
Portable Galvanometer
Physical DescriptionObject comes in a wooden box. Box has a hinged lid and can be locked. Lock is made of metal with two screws on the face holding it to the side of the box. A leather strap is attached to the side of the box by the lock. There is a…
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Crookes tube (X-ray generator)
Physical Description: The body of the Crookes tube instrument consists of a copper cube, in the center of a metal stand. The stand consists of a long…